How to Wire a Replacement 7-Way for a Gooseneck Trailer

Question

Question:

Ok , please help have a Ford F-350 super duty Flat bed Dooley Pull a gooseneck, I accidentally tied a rope to the cord to keep it from rubbing on The bed And while making a sharp turn with the plug out from behind the truck So we got a new seven blade round trailer plug Everyplace I checked cannot find the right Connection Green,Yellow,Brown,Black,White,Red On the Gooseneck how wire a 7 blade Nothing is hooked in the center

asked by: Patrick

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Expert Reply:

7-Way connectors like the # A7WCB that you referenced should be wired by function and not color. Since trailer manufacturers can sometimes use non-standard color wires for the taillight functions of their trailer it is best just to determine the function of each wire from your trailer's wiring and then wire it by function to the 7-way you end up getting.

What you can do to determine the function of each wire is use a 12 volt battery like a car battery and run a jumper wire from the positive post of the wire to the wires of the trailer and then wire it by function according to the diagram I attached.

expert reply by: Jameson C

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Answer 1

Yes, the 7-Way Round RV Style Trailer Connector - Trailer Side #A7WCB will match and plug into the 7-way on your 2020 Buick Enclave.

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Answer 2

The Pollak Black Plastic, 7-Pole, RV-Style Trailer Connector - Trailer End #PK12706 will match the colors and locations of the attached photo. I've also attached a wiring article to assist further if the colors don't match functions…

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Answer 3

You'd simply attach one wire to power from the taillight circuit, the other should ground to the trailer frame. I'd look closely at that wires to see if one has a white stripe indicating ground.

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Answer 4

Of the three wires, one would be the ground, one for the turn signal/brake light, and the third for the running lights. I am not familiar with the wire colors you describe. Your best bet would be to connect to the existing wires in differing…

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Answer 5

The Hopkins 7-Way RV Style Trailer Connector with Nite-Glow - Trailer End #HM48502 will connect to your trailer wiring based on the function and pin locations of the attached photo. I've also attached an article to further assist with the trailer…

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Answer 6

I have attached a diagram that shows the pin designations for the 7-Pole Round to 7-Pole Flat Trailer Connector Adapter, #HM47425. I labeled the pins as they relate to the RV side 7-way blade connector. The 7-way round pin connectors typically have…

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Answer 7

Yes, you can but please keep in mind that this is not the most efficient way for charging a depleted battery. However, for maintaining a charge on a battery while you are driving you can use the 7-way connection such as the Optronics 7-way, #A7WCB…

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Answer 8

If you have a vehicle specific wiring harness for a brake controller then that would indicate that you have a factory tow package and subsequently would already have a 7-way at the back of your vehicle. The universal 7-way connector #ETBC7 is meant…

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Answer 9

You should not need any extra fuses. Trucks like the Dodge Ram 2500 are built for towing and should have enough power on those circuits. First I would wire the lights to the trailer and worry about the 6-Way last. I would wire the lights with the…

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Answer 10

Either way is correct. It depends on if you want to keep the semi-style 7-Way (if you need to tow that type of trailer) or if you will never be towing a semi-trailer. If you need to keep the 7-Way semi active on the truck, then you would need to make…

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Answer 11

For your Fulton Square jack you will use the Replacement Bevel Gear Kit for Fulton Jacks - 800 - 1,200 lbs #F0933302S00 or the Replacement Sidewind Gear Kit for Bulldog or Fulton Jacks - 5,000 lbs #BD500106 depending on the jack's rated…

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Answer 12

When wiring a trailer connector, it is best to wire by function, as wire colors can vary. We have an excellent wiring diagram on our website, I will provide you a link so you can look at it. If you are looking at the inside of the trailer connector…

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How to Wire a Replacement 7-Way for a Gooseneck Trailer

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